height=65;
weight=18;
head_height=2;
head_weight=6.5;

module battery_18650(height,weight,head_height,head_weight)
{
    cylinder(height,r=weight/2,center=true,$fn=1000);
    translate([0,0,(height+head_height)/2])
        cylinder(head_height,r=head_weight/2,center=true,$fn=1000);
}



//battery_18650(height,weight,head_height,head_weight);